Slidable valve



FIG. 1 is a bottom perspective view of a slidable valve showing my newdesign;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left end elevational view thereof; and

FIG. 6 is a right end elevational view thereof.

The ornamental design for a slide valve, substantially as shown anddescribed.